diff options
Diffstat (limited to '3683/CH8/EX8.1/Ex8_1.sce')
| -rw-r--r-- | 3683/CH8/EX8.1/Ex8_1.sce | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/3683/CH8/EX8.1/Ex8_1.sce b/3683/CH8/EX8.1/Ex8_1.sce new file mode 100644 index 000000000..48a4703ba --- /dev/null +++ b/3683/CH8/EX8.1/Ex8_1.sce @@ -0,0 +1,31 @@ +lx=3.5//in m
+ly=4//in m
+sigma_cbc=5//in MPa
+sigma_st=140//in MPa
+D=lx*10^3/35//in mm
+W1=(D/10^3)*25//self-weight, in kN/m
+W2=1.5//live load, in kN/m
+W=W1+W2//in kN/m
+a=ly/lx
+Ax=0.078
+Ay=0.0602
+Mx=Ax*W*lx^2//in kN-m
+My=Ay*W*lx^2//in kN-m
+d=sqrt(Mx*10^6/0.87/10^3)//in mm
+d=70//assume, in mm
+//assume 10 mm dia bars
+dia=10//in mm
+D=d+dia/2+15//<100 mm assumed value
+D=100//in mm
+d=D-dia/2-15//in mm
+//steel - short span
+z=0.87*d//in mm
+Ast=Mx*10^6/sigma_st/z//in sq mm
+s1=1000*0.785*dia^2/Ast//in mm
+s1=200//assume, in mm
+//long span
+d=d-dia/2-dia/2//in mm
+Ast=My*10^6/sigma_st/0.87/d//in sq mm
+s2=1000*0.785*dia^2/Ast//>3d = 210 mm
+s2=210//assume, in mm
+mprintf("Summary of design\nSlab thickness=%d mm\nCover=15 mm\nSteel-\n(i)Short span = 10 mm dia @ %d mm c/c\n(ii)Long span = 10 mm dia @ %d mm c/c\nAlternate bars are bent up at l/7 from support in both directions",D,s1,s2)
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